PMIPv6 multicasting support using native infrastructure draft-sijeon-multimob-direct-routing-pmip6-00.txt Seil Jeon and Younghan Kim 80 th IETF, March 2011, Prague, Czech Republic

Status of the Draft This draft has been derived and revised from [I.D.sijeon-multimob-mms- pmip6] as re-chartered MULTIMOB WG description – The usage of direct routing architecture is highlighted – Simple comparison is also given with base solution and dedicated LMA approach 2IETF 80th, Prague, Czech Republic

Problem statement To support multicasting in PMIPv6, the base deployment option has been specified [I-D.ietf-multimob-pmipv6-base-solution] The base solution introduces a tunnel convergence issue in the case that a MAG receives the same multicast packets from more than one LMA – Duplicated multicast packets are converged into one MAG 3IETF 80th, Prague, Czech Republic

Proposed direct routing (local routing) solution We propose a direct routing solution that a MAG receives multicast packets from a multicast router or a content source directly without tunnel – A MAG receives multicast packet from MR or source directly The key idea is to separate the multicasting function from LMA, however the MLD proxy is required to be placed on MAGs – An LMA is not involved in multicasting action It is simple and easy to deploy 4IETF 80th, Prague, Czech Republic

Handover procedure Direct routing solution follows standard PMIPv6 operation PBU/PBA procedure occurs with MLD query/report at the same time 5IETF 80th, Prague, Czech Republic

Benefits of the direct routing No tunnel convergence problem! No packet tunneling overhead! No complexity on LMA! No extensions on PMIPv6 entities! 6IETF 80th, Prague, Czech Republic

Applicability Regardless of the location of contents, the direct/local routing is well applied in supporting multicast service Direct/local routing concept is reflected in MBMS architecture of 3GPP SAE – Multicast traffic are delivered from content source to MBMS-GW without passing LMA (PDN-GW) 7 * 3GPP TS , “Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description (Release 9),” IETF 80th, Prague, Czech Republic

Comparison Performance comparison of three kinds of PMIPv6 multicasting approaches – Base deployment, dedicated LMA, and direct routing All MNs subscribed to same multicast group # of LMAs and MAGs : 4 and 200, respectively # of mobile nodes : 10,000 8IETF 80th, Prague, Czech Republic

Comparison If the number of received packets at MAG is approximately to be 1000 during 1s (500 Kbps) Tunnel header is 40 bytes and 1 hour is assumed for multicast delivery – Packet overhead : (tunnel_header size X # of packets X # of tunnels X time(s)) 9IETF 80th, Prague, Czech Republic PMIP Multicast Scheme Redundant streams at MAG Simultaneous streams at LMA/ D-LMA(MR) Simultaneous streams btw. MAGs and LMAs(MR) # of tunnels Packet overhead btw. MAGs and LMAs(MR) Base solution multicast LMA Gbytes Dedicated multicast LMA GBytes Direct routing

Q & A 10IETF 80th, Prague, Czech Republic